Doorbolt for multileaf doors



Filed Aug. 22, 1932 2 Sheets-Sheet l (29 uz a b 1 .mcent Jan. 23, 1934.

M. VINC ENT DOORBOLT FOR MULTILEAF DOORS 2 Sheets-Sheet 2 Filed Aug. 22, 1932 Patented Jam 23, 1934 `{.;j UNITED STATES 1,944,650 DOORBOLT FOR MULTILEAF,DOORS Maurice Vncent, Paris, France Application August 22,1932, Serial No. 629,975,

and in France August 4, 1932 For looking apartment doors having several leaves, use is made of bolts of the so-called "needle" type which are adapted to hold, at will, one orrmore of these leaves stationary, and the belts of which are constituted by rods housed, near the rabbet of the leaf, in a recess provided therein, so as to be completely hidden.

The placing of these needle bolts on the doors is very difi'icult, and can be effected only by skilled workmen. Moreover, when, in the case of a door having three or four leaves for instance, a leaf provided with such bolts carries a second leaf pivoted on its rabbet, the pin hinges serving for the assemblage are secured on the first leaf, independently of the bolt, so that the manufacture of the iron fittings is very complicated and costly.

The present invention has for its object improvements in iron fittings comprising looking 20 bolts of this kind, for the purpose, in particular, of considerably simplifying the manufacture of the same and especially the placing in position, which latter can be eifected, for a bolt and a pin hinge mounted on one and the same rabbet, in a single operation and by unskilled labour.

According to the invention, the locking bolt, instead of being mounted within a housing or recess provided in the thickness of the wood, is fitted in a groove provided in the rabbet, and exactly fills up the said groove, so that it is as completely concealed as an ordinary needle bolt, although the formation of its housing or recess and its fixing within the latter are much more easy.

In a particular arrangement according to the invention, when a second leaf is hinged on the rabbet of a leaf provided with a bolt of this kind, each hinge plate for constituting the pin hinge is rigid with the plate of the bolt, so that 40 the placing in position of the bolt and of the adjacent pin hinge plate are effected in a single operation, as simple as the placing of an ordinary pin hinge.

A form of carrying out the subject-matter of the invention will be described hereinafter, by way of example only, with reference to the accompanying drawings, in which:

Fig. l is a partial elevation, with parts broken away, of leaves provided with the improved locking bolt.

Fig. 2 is a plan view, partly in section, and on an enlarged scale, of the said leaves.

Fig. 3 is an elevation of a bolt provided with a pin hinge.

Fig. 4 is a similar View of a bolt alone devised in a slightly diiferent manner; v In this example, it will'be assumed that a door provided with three or four leaves is under consideration, this door having, on one side, two leaves V, V,` and, on the other side, one or two leaves (not shown).

The'leaf V is mounted on the door frame D in the usual manner, by means of pin hinges 1. It carries the leaf V, hinged on its rabbet F, and can be held stationary at will, in closed position by two looking bolts, which, according to the invention are devised as follows:

The inner portion of the rabbet F is provided, at each of its ends, with a groove R in which the bolt is received (in the drawings, the upper bolts alone have been shown; the lower bolts are, as usual, symmetrically arranged, at the bottom of the door).

This bolt is carried by a plate or upright 2, constituted by a fiat iron member fitted in the rabbet, on the edges of the groove R, so as to completely conceal the device.

The upper portion of this plate forms a rightr angular projection 2a which is embedded in the top of the leaf V, and the plate is secured by means of screws 3.

On the inner face of the plate 2, within the groove R, are secu'ed guides 4, preferably oi' copper, for reducing friction and avoiding Wedging due to oxidation, in which guides 4 the locking bolt or rod 5 slides.

The upper end of this bolt or rod 5 passes through a mortice 2b provided in the projection 2a and fits, in closed position, in a staple 6 carried by the upper door frame member Dl (see the portion in dot and dash lines in Fig. l).

Its lower end Sa is bent at towards the plate 2 and passes through a mortice 2c provided in this plate, so that access may readily be had thereto when the leaf V is open-and that the looking bolt may be operated. It does not appreciably project beyond the plate 2 so as not to hinder the folding of the leaf V.

The bolt 5 also forms (Fig. 3) heel pieces or shoulders 5b which, abutting against the guides 4, limit its upward and downward movements, and it is provided with recesses 5c through which can pass the screws securing the plate 2.

A leaf spring 8, arranged between the plate and the bolt 5, presses the latter against the guides and prevents play from taking place.

The leaves V and V are assembled by means of pin hinges, and, according to a particular arrangement of the invention, the half pin hinges corresponding to the leaf V are not directly secured to the latter, but cn the plates carrying the looking bolts.

The drawings show in particular, at the level of the upper bolt, a pin hinge one half 'Ta of which corresponding to the leaf V is rigid with the plate 2, the other half, 'lb being secured in the usual way on the inner face of the rabbet F of the leaf-V. p i

The placing in position of the bolts and of the half pin hinges 'la is thus effected in a single operation, quite as simply as for the half pin hinges alone in the ordinary devices.

At the end of the leaf V is mounted a looking device identical to the preceding one,'but .with-` out the half pin hinge '7a. 7

Besides the advantages above mentioned, this bolt is also of remarkably rugged;construction. y

Fig. 4 illustrates a modification according to which, instead. of recesses 50, morticesd are provided in the sliding bolt 5 for the passage ,944,e r x 4 I tions of manufacture, the shape and the arrange ment of the leaves for which it is intended, without departing thereby from the scope of the invention. Any suitable tools and methods can also be provided for the manufacture of this locking bolt, particularly, by moulding, pressing, etc.

I claim:-

1. .The combination of a ertical looking bolt for door leaves, adapted to be'fitted in 'a fgroove provided in the rabbet of the door leaf, a plate adapted to be secured on the same rabbet of said door leaf, means on the rear face of this plate for guiding said looking bolt in the Vertical direction `and a pin-sfiocket on one longitudinal side of said plate and in one piece with the latter. 2. The cnibination of a Vertical looking bolt for door-leaves, ,adapted to be fitted in a groove provided ina rabbet' of the door leaf, a plate adapted to be secured on the same rabbet of said door leaf, means on the rear face of this plate for .egidin saiduo k s .bolt in ,the .rer i al s ection, ,a pin sqcketgn one longitudinal side i id''late an in g 'e pi 'w th'th l t separate p rQ k t ada t d pin socket, a securing'plate i r`` onejpiece with said eparate pi o' kef ang rovid dor s c r ingsaidseparate pin-'spcketfto another door leaf.

MAUIICE Vince@- 

